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Message-ID: <ZPMxVDKcOMIimQ/6@valkosipuli.retiisi.eu>
Date: Sat, 2 Sep 2023 12:57:56 +0000
From: Sakari Ailus <sakari.ailus@....fi>
To: Umang Jain <umang.jain@...asonboard.com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Lee Jackson <lee.jackson@...ucam.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Shawn Tu <shawnx.tu@...el.com>,
Nicholas Roth <nicholas@...hemail.net>,
Mikhail Rudenko <mike.rudenko@...il.com>,
kieran.bingham@...asonboard.com,
Marco Felsch <m.felsch@...gutronix.de>,
jacopo.mondi@...asonboard.com
Subject: Re: [PATCH 2/2] media: i2c: imx519: Support for the Sony IMX519
sensor
Hi Umang,
Thank you for the patchset. Please see my comments below.
On Thu, Jul 27, 2023 at 09:11:08PM +0530, Umang Jain wrote:
> From: Lee Jackson <lee.jackson@...ucam.com>
>
> Adds a driver for the 16MPix IMX519 CSI2 sensor.
> Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
> currently only supports 2 lanes. The driver also supports
> Phase Detection Auto Focus (PDAF).
>
> The following Bayer modes are currently available:
>
> 4656x3496 10-bit @ 10fps
> 3840x2160 10-bit (cropped) @ 21fps
> 2328x1748 10-bit (binned) @ 30fps
> 1920x1080 10-bit (cropped/binned) @ 60fps
> 1280x720 10-bit (cropped/binned) @ 120fps
>
> The imx519 driver to adverise support for embedded data streams.
> The imx519 sensor subdevice overloads the media pad to differentiate
> between image stream (pad 0) and embedded data stream (pad 1) when
> performing the v4l2_subdev_pad_ops functions.
>
> Signed-off-by: Umang Jain <umang.jain@...asonboard.com>
> Tested-by: Umang Jain <umang.jain@...asonboard.com>
> ---
> MAINTAINERS | 8 +
> drivers/media/i2c/Kconfig | 11 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/imx519.c | 2134 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 2154 insertions(+)
> create mode 100644 drivers/media/i2c/imx519.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 63c7ce10a4ba..e5a33733f928 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -19747,6 +19747,14 @@ T: git git://linuxtv.org/media_tree.git
> F: Documentation/devicetree/bindings/media/i2c/sony,imx415.yaml
> F: drivers/media/i2c/imx415.c
>
> +SONY IMX519 SENSOR DRIVER
> +M: Lee Jackson <lee.jackson@...ucam.com>
> +L: linux-media@...r.kernel.org
> +S: Maintained
> +T: git git://linuxtv.org/media_tree.git
> +F: Documentation/devicetree/bindings/media/i2c/sony,imx519.yaml
> +F: drivers/media/i2c/imx519.c
> +
> SONY MEMORYSTICK SUBSYSTEM
> M: Maxim Levitsky <maximlevitsky@...il.com>
> M: Alex Dubov <oakad@...oo.com>
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 256d55bb2b1d..ebc2c7c42c53 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -255,6 +255,17 @@ config VIDEO_IMX415
> To compile this driver as a module, choose M here: the
> module will be called imx415.
>
> +config VIDEO_IMX519
> + tristate "Arducam IMX519 sensor support"
> + depends on I2C && VIDEO_DEV
> + select VIDEO_V4L2_SUBDEV_API
> + help
> + This is a Video4Linux2 sensor driver for the Arducam
> + IMX519 camera.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called IMX519.
> +
> config VIDEO_MAX9271_LIB
> tristate
>
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index b44dacf935f4..872b98e5443f 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -49,6 +49,7 @@ obj-$(CONFIG_VIDEO_IMX335) += imx335.o
> obj-$(CONFIG_VIDEO_IMX355) += imx355.o
> obj-$(CONFIG_VIDEO_IMX412) += imx412.o
> obj-$(CONFIG_VIDEO_IMX415) += imx415.o
> +obj-$(CONFIG_VIDEO_IMX519) += imx519.o
> obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o
> obj-$(CONFIG_VIDEO_ISL7998X) += isl7998x.o
> obj-$(CONFIG_VIDEO_KS0127) += ks0127.o
> diff --git a/drivers/media/i2c/imx519.c b/drivers/media/i2c/imx519.c
> new file mode 100644
> index 000000000000..54420b7738f1
> --- /dev/null
> +++ b/drivers/media/i2c/imx519.c
> @@ -0,0 +1,2134 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * A V4L2 driver for Sony IMX519 cameras.
> + * Copyright (C) 2023 Arducam Technology co., Ltd.
> + *
> + */
> +#include <asm/unaligned.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regulator/consumer.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-mediabus.h>
> +
> +#define IMX519_REG_VALUE_08BIT 1
> +#define IMX519_REG_VALUE_16BIT 2
> +
> +/* Chip ID */
> +#define IMX519_REG_CHIP_ID 0x0016
> +#define IMX519_CHIP_ID 0x0519
> +
> +#define IMX519_REG_MODE_SELECT 0x0100
> +#define IMX519_MODE_STANDBY 0x00
> +#define IMX519_MODE_STREAMING 0x01
> +
> +#define IMX519_REG_ORIENTATION 0x101
> +
> +#define IMX519_XCLK_FREQ 24000000
> +
> +#define IMX519_DEFAULT_LINK_FREQ 408000000
> +
> +/* Pixel rate is fixed at 426MHz for all the modes */
> +#define IMX519_PIXEL_RATE 426666667
> +
> +/* V_TIMING internal */
> +#define IMX519_REG_FRAME_LENGTH 0x0340
> +#define IMX519_FRAME_LENGTH_MAX 0xffdc
> +
> +/* Long exposure multiplier */
> +#define IMX519_LONG_EXP_SHIFT_MAX 7
> +#define IMX519_LONG_EXP_SHIFT_REG 0x3100
> +
> +/* Exposure control */
> +#define IMX519_REG_EXPOSURE 0x0202
> +#define IMX519_EXPOSURE_OFFSET 32
> +#define IMX519_EXPOSURE_MIN 20
> +#define IMX519_EXPOSURE_STEP 1
> +#define IMX519_EXPOSURE_DEFAULT 0x3e8
> +#define IMX519_EXPOSURE_MAX (IMX519_FRAME_LENGTH_MAX - \
> + IMX519_EXPOSURE_OFFSET)
> +
> +/* Analog gain control */
> +#define IMX519_REG_ANALOG_GAIN 0x0204
> +#define IMX519_ANA_GAIN_MIN 0
> +#define IMX519_ANA_GAIN_MAX 960
> +#define IMX519_ANA_GAIN_STEP 1
> +#define IMX519_ANA_GAIN_DEFAULT 0x0
> +
> +/* Digital gain control */
> +#define IMX519_REG_DIGITAL_GAIN 0x020e
> +#define IMX519_DGTL_GAIN_MIN 0x0100
> +#define IMX519_DGTL_GAIN_MAX 0xffff
> +#define IMX519_DGTL_GAIN_DEFAULT 0x0100
> +#define IMX519_DGTL_GAIN_STEP 1
> +
> +/* Test Pattern Control */
> +#define IMX519_REG_TEST_PATTERN 0x0600
> +#define IMX519_TEST_PATTERN_DISABLE 0
> +#define IMX519_TEST_PATTERN_SOLID_COLOR 1
> +#define IMX519_TEST_PATTERN_COLOR_BARS 2
> +#define IMX519_TEST_PATTERN_GREY_COLOR 3
> +#define IMX519_TEST_PATTERN_PN9 4
> +
> +/* Test pattern colour components */
> +#define IMX519_REG_TEST_PATTERN_R 0x0602
> +#define IMX519_REG_TEST_PATTERN_GR 0x0604
> +#define IMX519_REG_TEST_PATTERN_B 0x0606
> +#define IMX519_REG_TEST_PATTERN_GB 0x0608
> +#define IMX519_TEST_PATTERN_COLOUR_MIN 0
> +#define IMX519_TEST_PATTERN_COLOUR_MAX 0x0fff
> +#define IMX519_TEST_PATTERN_COLOUR_STEP 1
> +#define IMX519_TEST_PATTERN_R_DEFAULT IMX519_TEST_PATTERN_COLOUR_MAX
> +#define IMX519_TEST_PATTERN_GR_DEFAULT 0
> +#define IMX519_TEST_PATTERN_B_DEFAULT 0
> +#define IMX519_TEST_PATTERN_GB_DEFAULT 0
> +
> +/* Embedded metadata stream structure */
> +#define IMX519_EMBEDDED_LINE_WIDTH (5820 * 3)
> +#define IMX519_NUM_EMBEDDED_LINES 1
> +
> +/* IMX519 native and active pixel array size. */
> +#define IMX519_NATIVE_WIDTH 4672U
> +#define IMX519_NATIVE_HEIGHT 3648U
> +#define IMX519_PIXEL_ARRAY_LEFT 8U
> +#define IMX519_PIXEL_ARRAY_TOP 48U
> +#define IMX519_PIXEL_ARRAY_WIDTH 4656U
> +#define IMX519_PIXEL_ARRAY_HEIGHT 3496U
> +
> +enum pad_types {
> + IMAGE_PAD,
> + METADATA_PAD,
With streams, you only need one pad. (See that imx390 driver for an
example (below).)
> + NUM_PADS
> +};
> +
> +struct imx519_reg {
> + u16 address;
> + u8 val;
> +};
> +
> +struct imx519_reg_list {
> + unsigned int num_of_regs;
> + const struct imx519_reg *regs;
> +};
> +
> +/* Mode : resolution and related config&values */
> +struct imx519_mode {
> + /* Frame width */
> + unsigned int width;
> +
> + /* Frame height */
> + unsigned int height;
> +
> + /* H-timing in pixels */
> + unsigned int line_length_pix;
> +
> + /* Analog crop rectangle. */
> + struct v4l2_rect crop;
> +
> + /* Highest possible framerate. */
> + struct v4l2_fract timeperframe_min;
> +
> + /* Default framerate. */
> + struct v4l2_fract timeperframe_default;
> +
> + /* Default register values */
> + struct imx519_reg_list reg_list;
> +};
> +
> +static const struct imx519_reg mode_common_regs[] = {
> + {0x0100, 0x00},
> + {0x0136, 0x18},
> + {0x0137, 0x00},
> + {0x3c7e, 0x01},
> + {0x3c7f, 0x07},
> + {0x3020, 0x00},
> + {0x3e35, 0x01},
> + {0x3f7f, 0x01},
> + {0x5609, 0x57},
> + {0x5613, 0x51},
> + {0x561f, 0x5e},
> + {0x5623, 0xd2},
> + {0x5637, 0x11},
> + {0x5657, 0x11},
> + {0x5659, 0x12},
> + {0x5733, 0x60},
> + {0x5905, 0x57},
> + {0x590f, 0x51},
> + {0x591b, 0x5e},
> + {0x591f, 0xd2},
> + {0x5933, 0x11},
> + {0x5953, 0x11},
> + {0x5955, 0x12},
> + {0x5a2f, 0x60},
> + {0x5a85, 0x57},
> + {0x5a8f, 0x51},
> + {0x5a9b, 0x5e},
> + {0x5a9f, 0xd2},
> + {0x5ab3, 0x11},
> + {0x5ad3, 0x11},
> + {0x5ad5, 0x12},
> + {0x5baf, 0x60},
> + {0x5c15, 0x2a},
> + {0x5c17, 0x80},
> + {0x5c19, 0x31},
> + {0x5c1b, 0x87},
> + {0x5c25, 0x25},
> + {0x5c27, 0x7b},
> + {0x5c29, 0x2a},
> + {0x5c2b, 0x80},
> + {0x5c2d, 0x31},
> + {0x5c2f, 0x87},
> + {0x5c35, 0x2b},
> + {0x5c37, 0x81},
> + {0x5c39, 0x31},
> + {0x5c3b, 0x87},
> + {0x5c45, 0x25},
> + {0x5c47, 0x7b},
> + {0x5c49, 0x2a},
> + {0x5c4b, 0x80},
> + {0x5c4d, 0x31},
> + {0x5c4f, 0x87},
> + {0x5c55, 0x2d},
> + {0x5c57, 0x83},
> + {0x5c59, 0x32},
> + {0x5c5b, 0x88},
> + {0x5c65, 0x29},
> + {0x5c67, 0x7f},
> + {0x5c69, 0x2e},
> + {0x5c6b, 0x84},
> + {0x5c6d, 0x32},
> + {0x5c6f, 0x88},
> + {0x5e69, 0x04},
> + {0x5e9d, 0x00},
> + {0x5f18, 0x10},
> + {0x5f1a, 0x0e},
> + {0x5f20, 0x12},
> + {0x5f22, 0x10},
> + {0x5f24, 0x0e},
> + {0x5f28, 0x10},
> + {0x5f2a, 0x0e},
> + {0x5f30, 0x12},
> + {0x5f32, 0x10},
> + {0x5f34, 0x0e},
> + {0x5f38, 0x0f},
> + {0x5f39, 0x0d},
> + {0x5f3c, 0x11},
> + {0x5f3d, 0x0f},
> + {0x5f3e, 0x0d},
> + {0x5f61, 0x07},
> + {0x5f64, 0x05},
> + {0x5f67, 0x03},
> + {0x5f6a, 0x03},
> + {0x5f6d, 0x07},
> + {0x5f70, 0x07},
> + {0x5f73, 0x05},
> + {0x5f76, 0x02},
> + {0x5f79, 0x07},
> + {0x5f7c, 0x07},
> + {0x5f7f, 0x07},
> + {0x5f82, 0x07},
> + {0x5f85, 0x03},
> + {0x5f88, 0x02},
> + {0x5f8b, 0x01},
> + {0x5f8e, 0x01},
> + {0x5f91, 0x04},
> + {0x5f94, 0x05},
> + {0x5f97, 0x02},
> + {0x5f9d, 0x07},
> + {0x5fa0, 0x07},
> + {0x5fa3, 0x07},
> + {0x5fa6, 0x07},
> + {0x5fa9, 0x03},
> + {0x5fac, 0x01},
> + {0x5faf, 0x01},
> + {0x5fb5, 0x03},
> + {0x5fb8, 0x02},
> + {0x5fbb, 0x01},
> + {0x5fc1, 0x07},
> + {0x5fc4, 0x07},
> + {0x5fc7, 0x07},
> + {0x5fd1, 0x00},
> + {0x6302, 0x79},
> + {0x6305, 0x78},
> + {0x6306, 0xa5},
> + {0x6308, 0x03},
> + {0x6309, 0x20},
> + {0x630b, 0x0a},
> + {0x630d, 0x48},
> + {0x630f, 0x06},
> + {0x6311, 0xa4},
> + {0x6313, 0x03},
> + {0x6314, 0x20},
> + {0x6316, 0x0a},
> + {0x6317, 0x31},
> + {0x6318, 0x4a},
> + {0x631a, 0x06},
> + {0x631b, 0x40},
> + {0x631c, 0xa4},
> + {0x631e, 0x03},
> + {0x631f, 0x20},
> + {0x6321, 0x0a},
> + {0x6323, 0x4a},
> + {0x6328, 0x80},
> + {0x6329, 0x01},
> + {0x632a, 0x30},
> + {0x632b, 0x02},
> + {0x632c, 0x20},
> + {0x632d, 0x02},
> + {0x632e, 0x30},
> + {0x6330, 0x60},
> + {0x6332, 0x90},
> + {0x6333, 0x01},
> + {0x6334, 0x30},
> + {0x6335, 0x02},
> + {0x6336, 0x20},
> + {0x6338, 0x80},
> + {0x633a, 0xa0},
> + {0x633b, 0x01},
> + {0x633c, 0x60},
> + {0x633d, 0x02},
> + {0x633e, 0x60},
> + {0x633f, 0x01},
> + {0x6340, 0x30},
> + {0x6341, 0x02},
> + {0x6342, 0x20},
> + {0x6343, 0x03},
> + {0x6344, 0x80},
> + {0x6345, 0x03},
> + {0x6346, 0x90},
> + {0x6348, 0xf0},
> + {0x6349, 0x01},
> + {0x634a, 0x20},
> + {0x634b, 0x02},
> + {0x634c, 0x10},
> + {0x634d, 0x03},
> + {0x634e, 0x60},
> + {0x6350, 0xa0},
> + {0x6351, 0x01},
> + {0x6352, 0x60},
> + {0x6353, 0x02},
> + {0x6354, 0x50},
> + {0x6355, 0x02},
> + {0x6356, 0x60},
> + {0x6357, 0x01},
> + {0x6358, 0x30},
> + {0x6359, 0x02},
> + {0x635a, 0x30},
> + {0x635b, 0x03},
> + {0x635c, 0x90},
> + {0x635f, 0x01},
> + {0x6360, 0x10},
> + {0x6361, 0x01},
> + {0x6362, 0x40},
> + {0x6363, 0x02},
> + {0x6364, 0x50},
> + {0x6368, 0x70},
> + {0x636a, 0xa0},
> + {0x636b, 0x01},
> + {0x636c, 0x50},
> + {0x637d, 0xe4},
> + {0x637e, 0xb4},
> + {0x638c, 0x8e},
> + {0x638d, 0x38},
> + {0x638e, 0xe3},
> + {0x638f, 0x4c},
> + {0x6390, 0x30},
> + {0x6391, 0xc3},
> + {0x6392, 0xae},
> + {0x6393, 0xba},
> + {0x6394, 0xeb},
> + {0x6395, 0x6e},
> + {0x6396, 0x34},
> + {0x6397, 0xe3},
> + {0x6398, 0xcf},
> + {0x6399, 0x3c},
> + {0x639a, 0xf3},
> + {0x639b, 0x0c},
> + {0x639c, 0x30},
> + {0x639d, 0xc1},
> + {0x63b9, 0xa3},
> + {0x63ba, 0xfe},
> + {0x7600, 0x01},
> + {0x79a0, 0x01},
> + {0x79a1, 0x01},
> + {0x79a2, 0x01},
> + {0x79a3, 0x01},
> + {0x79a4, 0x01},
> + {0x79a5, 0x20},
> + {0x79a9, 0x00},
> + {0x79aa, 0x01},
> + {0x79ad, 0x00},
> + {0x79af, 0x00},
> + {0x8173, 0x01},
> + {0x835c, 0x01},
> + {0x8a74, 0x01},
> + {0x8c1f, 0x00},
> + {0x8c27, 0x00},
> + {0x8c3b, 0x03},
> + {0x9004, 0x0b},
> + {0x920c, 0x6a},
> + {0x920d, 0x22},
> + {0x920e, 0x6a},
> + {0x920f, 0x23},
> + {0x9214, 0x6a},
> + {0x9215, 0x20},
> + {0x9216, 0x6a},
> + {0x9217, 0x21},
> + {0x9385, 0x3e},
> + {0x9387, 0x1b},
> + {0x938d, 0x4d},
> + {0x938f, 0x43},
> + {0x9391, 0x1b},
> + {0x9395, 0x4d},
> + {0x9397, 0x43},
> + {0x9399, 0x1b},
> + {0x939d, 0x3e},
> + {0x939f, 0x2f},
> + {0x93a5, 0x43},
> + {0x93a7, 0x2f},
> + {0x93a9, 0x2f},
> + {0x93ad, 0x34},
> + {0x93af, 0x2f},
> + {0x93b5, 0x3e},
> + {0x93b7, 0x2f},
> + {0x93bd, 0x4d},
> + {0x93bf, 0x43},
> + {0x93c1, 0x2f},
> + {0x93c5, 0x4d},
> + {0x93c7, 0x43},
> + {0x93c9, 0x2f},
> + {0x974b, 0x02},
> + {0x995c, 0x8c},
> + {0x995d, 0x00},
> + {0x995e, 0x00},
> + {0x9963, 0x64},
> + {0x9964, 0x50},
> + {0xaa0a, 0x26},
> + {0xae03, 0x04},
> + {0xae04, 0x03},
> + {0xae05, 0x03},
> + {0xbc1c, 0x08},
> + {0xbcf1, 0x02},
> + {0x38a3, 0x00},
> +};
> +
> +/* 16 mpix 10fps */
> +static const struct imx519_reg mode_4656x3496_regs[] = {
> + {0x0111, 0x02},
> + {0x0112, 0x0a},
> + {0x0113, 0x0a},
> + {0x0114, 0x01},
> + {0x0342, 0x31},
> + {0x0343, 0x6a},
> + {0x0340, 0x0d},
> + {0x0341, 0xf4},
> + {0x0344, 0x00},
> + {0x0345, 0x00},
> + {0x0346, 0x00},
> + {0x0347, 0x00},
> + {0x0348, 0x12},
> + {0x0349, 0x2f},
> + {0x034a, 0x0d},
> + {0x034b, 0xa7},
> + {0x0220, 0x00},
> + {0x0221, 0x11},
> + {0x0222, 0x01},
> + {0x0900, 0x00},
> + {0x0901, 0x11},
> + {0x0902, 0x0a},
> + {0x3f4c, 0x01},
> + {0x3f4d, 0x01},
> + {0x4254, 0x7f},
> + {0x0401, 0x00},
> + {0x0404, 0x00},
> + {0x0405, 0x10},
> + {0x0408, 0x00},
> + {0x0409, 0x00},
> + {0x040a, 0x00},
> + {0x040b, 0x00},
> + {0x040c, 0x12},
> + {0x040d, 0x30},
> + {0x040e, 0x0d},
> + {0x040f, 0xa8},
> + {0x034c, 0x12},
> + {0x034d, 0x30},
> + {0x034e, 0x0d},
> + {0x034f, 0xa8},
> + {0x0301, 0x06},
> + {0x0303, 0x04},
> + {0x0305, 0x06},
> + {0x0306, 0x01},
> + {0x0307, 0x40},
> + {0x0309, 0x0a},
> + {0x030b, 0x02},
> + {0x030d, 0x04},
> + {0x030e, 0x01},
> + {0x030f, 0x10},
> + {0x0310, 0x01},
> + {0x0820, 0x0a},
> + {0x0821, 0x20},
> + {0x0822, 0x00},
> + {0x0823, 0x00},
> + {0x3e20, 0x01},
> + {0x3e37, 0x01},
> + {0x3e3b, 0x00},
> + {0x38a4, 0x00},
> + {0x38a5, 0x00},
> + {0x38a6, 0x00},
> + {0x38a7, 0x00},
> + {0x38a8, 0x01},
> + {0x38a9, 0x23},
> + {0x38aa, 0x01},
> + {0x38ab, 0x23},
> + {0x0106, 0x00},
> + {0x0b00, 0x00},
> + {0x3230, 0x00},
> + {0x3f14, 0x01},
> + {0x3f3c, 0x01},
> + {0x3f0d, 0x0a},
> + {0x3fbc, 0x00},
> + {0x3c06, 0x00},
> + {0x3c07, 0x48},
> + {0x3c0a, 0x00},
> + {0x3c0b, 0x00},
> + {0x3f78, 0x00},
> + {0x3f79, 0x40},
> + {0x3f7c, 0x00},
> + {0x3f7d, 0x00},
> +};
> +
> +/* 4k 21fps mode */
> +static const struct imx519_reg mode_3840x2160_regs[] = {
> + {0x0111, 0x02},
> + {0x0112, 0x0a},
> + {0x0113, 0x0a},
> + {0x0114, 0x01},
> + {0x0342, 0x28},
> + {0x0343, 0xf6},
> + {0x0340, 0x08},
> + {0x0341, 0xd4},
> + {0x0344, 0x01},
> + {0x0345, 0x98},
> + {0x0346, 0x02},
> + {0x0347, 0xa0},
> + {0x0348, 0x10},
> + {0x0349, 0x97},
> + {0x034a, 0x0b},
> + {0x034b, 0x17},
> + {0x0220, 0x00},
> + {0x0221, 0x11},
> + {0x0222, 0x01},
> + {0x0900, 0x00},
> + {0x0901, 0x11},
> + {0x0902, 0x0a},
> + {0x3f4c, 0x01},
> + {0x3f4d, 0x01},
> + {0x4254, 0x7f},
> + {0x0401, 0x00},
> + {0x0404, 0x00},
> + {0x0405, 0x10},
> + {0x0408, 0x00},
> + {0x0409, 0x00},
> + {0x040a, 0x00},
> + {0x040b, 0x00},
> + {0x040c, 0x0f},
> + {0x040d, 0x00},
> + {0x040e, 0x08},
> + {0x040f, 0x70},
> + {0x034c, 0x0f},
> + {0x034d, 0x00},
> + {0x034e, 0x08},
> + {0x034f, 0x70},
> + {0x0301, 0x06},
> + {0x0303, 0x04},
> + {0x0305, 0x06},
> + {0x0306, 0x01},
> + {0x0307, 0x40},
> + {0x0309, 0x0a},
> + {0x030b, 0x02},
> + {0x030d, 0x04},
> + {0x030e, 0x01},
> + {0x030f, 0x10},
> + {0x0310, 0x01},
> + {0x0820, 0x0a},
> + {0x0821, 0x20},
> + {0x0822, 0x00},
> + {0x0823, 0x00},
> + {0x3e20, 0x01},
> + {0x3e37, 0x01},
> + {0x3e3b, 0x00},
> + {0x38a4, 0x00},
> + {0x38a5, 0x00},
> + {0x38a6, 0x00},
> + {0x38a7, 0x00},
> + {0x38a8, 0x00},
> + {0x38a9, 0xf0},
> + {0x38aa, 0x00},
> + {0x38ab, 0xb4},
> + {0x0106, 0x00},
> + {0x0b00, 0x00},
> + {0x3230, 0x00},
> + {0x3f14, 0x01},
> + {0x3f3c, 0x01},
> + {0x3f0d, 0x0a},
> + {0x3fbc, 0x00},
> + {0x3c06, 0x00},
> + {0x3c07, 0x48},
> + {0x3c0a, 0x00},
> + {0x3c0b, 0x00},
> + {0x3f78, 0x00},
> + {0x3f79, 0x40},
> + {0x3f7c, 0x00},
> + {0x3f7d, 0x00},
> +};
> +
> +/* 2x2 binned 30fps mode */
> +static const struct imx519_reg mode_2328x1748_regs[] = {
> + {0x0111, 0x02},
> + {0x0112, 0x0a},
> + {0x0113, 0x0a},
> + {0x0114, 0x01},
> + {0x0342, 0x19},
> + {0x0343, 0x70},
> + {0x0340, 0x08},
> + {0x0341, 0x88},
> + {0x0344, 0x00},
> + {0x0345, 0x00},
> + {0x0346, 0x00},
> + {0x0347, 0x00},
> + {0x0348, 0x12},
> + {0x0349, 0x2f},
> + {0x034a, 0x0d},
> + {0x034b, 0xa7},
> + {0x0220, 0x00},
> + {0x0221, 0x11},
> + {0x0222, 0x01},
> + {0x0900, 0x01},
> + {0x0901, 0x22},
> + {0x0902, 0x0a},
> + {0x3f4c, 0x05},
> + {0x3f4d, 0x03},
> + {0x4254, 0x7f},
> + {0x0401, 0x00},
> + {0x0404, 0x00},
> + {0x0405, 0x10},
> + {0x0408, 0x00},
> + {0x0409, 0x00},
> + {0x040a, 0x00},
> + {0x040b, 0x00},
> + {0x040c, 0x09},
> + {0x040d, 0x18},
> + {0x040e, 0x06},
> + {0x040f, 0xd4},
> + {0x034c, 0x09},
> + {0x034d, 0x18},
> + {0x034e, 0x06},
> + {0x034f, 0xd4},
> + {0x0301, 0x06},
> + {0x0303, 0x04},
> + {0x0305, 0x06},
> + {0x0306, 0x01},
> + {0x0307, 0x40},
> + {0x0309, 0x0a},
> + {0x030b, 0x02},
> + {0x030d, 0x04},
> + {0x030e, 0x01},
> + {0x030f, 0x10},
> + {0x0310, 0x01},
> + {0x0820, 0x0a},
> + {0x0821, 0x20},
> + {0x0822, 0x00},
> + {0x0823, 0x00},
> + {0x3e20, 0x01},
> + {0x3e37, 0x01},
> + {0x3e3b, 0x00},
> + {0x38a4, 0x00},
> + {0x38a5, 0x00},
> + {0x38a6, 0x00},
> + {0x38a7, 0x00},
> + {0x38a8, 0x00},
> + {0x38a9, 0x91},
> + {0x38aa, 0x00},
> + {0x38ab, 0x91},
> + {0x0106, 0x00},
> + {0x0b00, 0x00},
> + {0x3230, 0x00},
> + {0x3f14, 0x01},
> + {0x3f3c, 0x01},
> + {0x3f0d, 0x0a},
> + {0x3fbc, 0x00},
> + {0x3c06, 0x00},
> + {0x3c07, 0x48},
> + {0x3c0a, 0x00},
> + {0x3c0b, 0x00},
> + {0x3f78, 0x00},
> + {0x3f79, 0x40},
> + {0x3f7c, 0x00},
> + {0x3f7d, 0x00},
> +};
> +
> +/* 1080p 60fps mode */
> +static const struct imx519_reg mode_1920x1080_regs[] = {
> + {0x0111, 0x02},
> + {0x0112, 0x0a},
> + {0x0113, 0x0a},
> + {0x0114, 0x01},
> + {0x0342, 0x17},
> + {0x0343, 0x8b},
> + {0x0340, 0x04},
> + {0x0341, 0x9c},
> + {0x0344, 0x01},
> + {0x0345, 0x98},
> + {0x0346, 0x02},
> + {0x0347, 0xa2},
> + {0x0348, 0x10},
> + {0x0349, 0x97},
> + {0x034a, 0x0b},
> + {0x034b, 0x15},
> + {0x0220, 0x00},
> + {0x0221, 0x11},
> + {0x0222, 0x01},
> + {0x0900, 0x01},
> + {0x0901, 0x22},
> + {0x0902, 0x0a},
> + {0x3f4c, 0x05},
> + {0x3f4d, 0x03},
> + {0x4254, 0x7f},
> + {0x0401, 0x00},
> + {0x0404, 0x00},
> + {0x0405, 0x10},
> + {0x0408, 0x00},
> + {0x0409, 0x00},
> + {0x040a, 0x00},
> + {0x040b, 0x00},
> + {0x040c, 0x07},
> + {0x040d, 0x80},
> + {0x040e, 0x04},
> + {0x040f, 0x38},
> + {0x034c, 0x07},
> + {0x034d, 0x80},
> + {0x034e, 0x04},
> + {0x034f, 0x38},
> + {0x0301, 0x06},
> + {0x0303, 0x04},
> + {0x0305, 0x06},
> + {0x0306, 0x01},
> + {0x0307, 0x40},
> + {0x0309, 0x0a},
> + {0x030b, 0x02},
> + {0x030d, 0x04},
> + {0x030e, 0x01},
> + {0x030f, 0x10},
> + {0x0310, 0x01},
> + {0x0820, 0x0a},
> + {0x0821, 0x20},
> + {0x0822, 0x00},
> + {0x0823, 0x00},
> + {0x3e20, 0x01},
> + {0x3e37, 0x01},
> + {0x3e3b, 0x00},
> + {0x38a4, 0x00},
> + {0x38a5, 0x00},
> + {0x38a6, 0x00},
> + {0x38a7, 0x00},
> + {0x38a8, 0x00},
> + {0x38a9, 0x78},
> + {0x38aa, 0x00},
> + {0x38ab, 0x5a},
> + {0x0106, 0x00},
> + {0x0b00, 0x00},
> + {0x3230, 0x00},
> + {0x3f14, 0x01},
> + {0x3f3c, 0x01},
> + {0x3f0d, 0x0a},
> + {0x3fbc, 0x00},
> + {0x3c06, 0x00},
> + {0x3c07, 0x48},
> + {0x3c0a, 0x00},
> + {0x3c0b, 0x00},
> + {0x3f78, 0x00},
> + {0x3f79, 0x40},
> + {0x3f7c, 0x00},
> + {0x3f7d, 0x00},
> +};
> +
> +/* 720p 120fps mode */
> +static const struct imx519_reg mode_1280x720_regs[] = {
> + {0x0111, 0x02},
> + {0x0112, 0x0a},
> + {0x0113, 0x0a},
> + {0x0114, 0x01},
> + {0x0342, 0x18},
> + {0x0343, 0x00},
> + {0x0340, 0x03},
> + {0x0341, 0x34},
> + {0x0344, 0x04},
> + {0x0345, 0x18},
> + {0x0346, 0x04},
> + {0x0347, 0x12},
> + {0x0348, 0x0e},
> + {0x0349, 0x17},
> + {0x034a, 0x09},
> + {0x034b, 0xb6},
> + {0x0220, 0x00},
> + {0x0221, 0x11},
> + {0x0222, 0x01},
> + {0x0900, 0x01},
> + {0x0901, 0x22},
> + {0x0902, 0x0a},
> + {0x3f4c, 0x05},
> + {0x3f4d, 0x03},
> + {0x4254, 0x7f},
> + {0x0401, 0x00},
> + {0x0404, 0x00},
> + {0x0405, 0x10},
> + {0x0408, 0x00},
> + {0x0409, 0x00},
> + {0x040a, 0x00},
> + {0x040b, 0x00},
> + {0x040c, 0x05},
> + {0x040d, 0x00},
> + {0x040e, 0x02},
> + {0x040f, 0xd0},
> + {0x034c, 0x05},
> + {0x034d, 0x00},
> + {0x034e, 0x02},
> + {0x034f, 0xd0},
> + {0x0301, 0x06},
> + {0x0303, 0x04},
> + {0x0305, 0x06},
> + {0x0306, 0x01},
> + {0x0307, 0x40},
> + {0x0309, 0x0a},
> + {0x030b, 0x02},
> + {0x030d, 0x04},
> + {0x030e, 0x01},
> + {0x030f, 0x10},
> + {0x0310, 0x01},
> + {0x0820, 0x0a},
> + {0x0821, 0x20},
> + {0x0822, 0x00},
> + {0x0823, 0x00},
> + {0x3e20, 0x01},
> + {0x3e37, 0x01},
> + {0x3e3b, 0x00},
> + {0x38a4, 0x00},
> + {0x38a5, 0x00},
> + {0x38a6, 0x00},
> + {0x38a7, 0x00},
> + {0x38a8, 0x00},
> + {0x38a9, 0x50},
> + {0x38aa, 0x00},
> + {0x38ab, 0x3c},
> + {0x0106, 0x00},
> + {0x0b00, 0x00},
> + {0x3230, 0x00},
> + {0x3f14, 0x01},
> + {0x3f3c, 0x01},
> + {0x3f0d, 0x0a},
> + {0x3fbc, 0x00},
> + {0x3c06, 0x00},
> + {0x3c07, 0x48},
> + {0x3c0a, 0x00},
> + {0x3c0b, 0x00},
> + {0x3f78, 0x00},
> + {0x3f79, 0x40},
> + {0x3f7c, 0x00},
> + {0x3f7d, 0x00},
> +};
> +
> +/* Mode configs */
> +static const struct imx519_mode supported_modes_10bit[] = {
> + {
> + .width = 4656,
> + .height = 3496,
> + .line_length_pix = 0x316a,
> + .crop = {
> + .left = IMX519_PIXEL_ARRAY_LEFT,
> + .top = IMX519_PIXEL_ARRAY_TOP,
> + .width = 4656,
> + .height = 3496,
> + },
> + .timeperframe_min = {
> + .numerator = 100,
> + .denominator = 900
> + },
> + .timeperframe_default = {
> + .numerator = 100,
> + .denominator = 900
> + },
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_4656x3496_regs),
> + .regs = mode_4656x3496_regs,
> + }
> + },
> + {
> + .width = 3840,
> + .height = 2160,
> + .line_length_pix = 0x28f6,
> + .crop = {
> + .left = IMX519_PIXEL_ARRAY_LEFT + 408,
> + .top = IMX519_PIXEL_ARRAY_TOP + 672,
> + .width = 3840,
> + .height = 2160,
> + },
> + .timeperframe_min = {
> + .numerator = 100,
> + .denominator = 1800
> + },
> + .timeperframe_default = {
> + .numerator = 100,
> + .denominator = 1800
> + },
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
> + .regs = mode_3840x2160_regs,
> + }
> + },
> + {
> + .width = 2328,
> + .height = 1748,
> + .line_length_pix = 0x1970,
> + .crop = {
> + .left = IMX519_PIXEL_ARRAY_LEFT,
> + .top = IMX519_PIXEL_ARRAY_TOP,
> + .width = 4656,
> + .height = 3496,
> + },
> + .timeperframe_min = {
> + .numerator = 100,
> + .denominator = 3000
> + },
> + .timeperframe_default = {
> + .numerator = 100,
> + .denominator = 3000
> + },
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_2328x1748_regs),
> + .regs = mode_2328x1748_regs,
> + }
> + },
> + {
> + .width = 1920,
> + .height = 1080,
> + .line_length_pix = 0x178b,
> + .crop = {
> + .left = IMX519_PIXEL_ARRAY_LEFT + 408,
> + .top = IMX519_PIXEL_ARRAY_TOP + 674,
> + .width = 3840,
> + .height = 2160,
> + },
> + .timeperframe_min = {
> + .numerator = 100,
> + .denominator = 6000
> + },
> + .timeperframe_default = {
> + .numerator = 100,
> + .denominator = 6000
> + },
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> + .regs = mode_1920x1080_regs,
> + }
> + },
> + {
> + .width = 1280,
> + .height = 720,
> + .line_length_pix = 0x1800,
> + .crop = {
> + .left = IMX519_PIXEL_ARRAY_LEFT + 1048,
> + .top = IMX519_PIXEL_ARRAY_TOP + 1042,
> + .width = 2560,
> + .height = 1440,
> + },
> + .timeperframe_min = {
> + .numerator = 100,
> + .denominator = 8000
> + },
> + .timeperframe_default = {
> + .numerator = 100,
> + .denominator = 8000
> + },
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
> + .regs = mode_1280x720_regs,
> + }
> + }
> +};
> +
> +/*
> + * The supported formats.
> + * This table MUST contain 4 entries per format, to cover the various flip
> + * combinations in the order
> + * - no flip
> + * - h flip
> + * - v flip
> + * - h&v flips
> + */
> +static const u32 codes[] = {
> + /* 10-bit modes. */
> + MEDIA_BUS_FMT_SRGGB10_1X10,
> + MEDIA_BUS_FMT_SGRBG10_1X10,
> + MEDIA_BUS_FMT_SGBRG10_1X10,
> + MEDIA_BUS_FMT_SBGGR10_1X10,
> +};
> +
> +static const char * const imx519_test_pattern_menu[] = {
> + "Disabled",
> + "Color Bars",
> + "Solid Color",
> + "Grey Color Bars",
> + "PN9"
> +};
> +
> +static const int imx519_test_pattern_val[] = {
> + IMX519_TEST_PATTERN_DISABLE,
> + IMX519_TEST_PATTERN_COLOR_BARS,
> + IMX519_TEST_PATTERN_SOLID_COLOR,
> + IMX519_TEST_PATTERN_GREY_COLOR,
> + IMX519_TEST_PATTERN_PN9,
> +};
> +
> +/* regulator supplies */
> +static const char * const imx519_supply_name[] = {
> + /* Supplies can be enabled in any order */
> + "VANA", /* Analog (2.8V) supply */
> + "VDIG", /* Digital Core (1.05V) supply */
> + "VDDL", /* IF (1.8V) supply */
> +};
> +
> +#define IMX519_NUM_SUPPLIES ARRAY_SIZE(imx519_supply_name)
Please use ARRAY_SIZE() directly instead.
> +
> +/*
> + * Initialisation delay between XCLR low->high and the moment when the sensor
> + * can start capture (i.e. can leave software standby), given by T7 in the
> + * datasheet is 8ms. This does include I2C setup time as well.
> + *
> + * Note, that delay between XCLR low->high and reading the CCI ID register (T6
> + * in the datasheet) is much smaller - 600us.
> + */
> +#define IMX519_XCLR_MIN_DELAY_US 8000
> +#define IMX519_XCLR_DELAY_RANGE_US 1000
> +
> +struct imx519 {
> + struct v4l2_subdev sd;
> + struct media_pad pad[NUM_PADS];
> +
> + unsigned int fmt_code;
> +
> + struct clk *xclk;
> +
> + struct gpio_desc *reset_gpio;
> + struct regulator_bulk_data supplies[IMX519_NUM_SUPPLIES];
> +
> + struct v4l2_ctrl_handler ctrl_handler;
> + /* V4L2 Controls */
> + struct v4l2_ctrl *pixel_rate;
> + struct v4l2_ctrl *exposure;
> + struct v4l2_ctrl *vflip;
> + struct v4l2_ctrl *hflip;
> + struct v4l2_ctrl *vblank;
> + struct v4l2_ctrl *hblank;
> +
> + /* Current mode */
> + const struct imx519_mode *mode;
> +
> + /*
> + * Mutex for serialized access:
> + * Protect sensor module set pad format and start/stop streaming safely.
> + */
> + struct mutex mutex;
> +
> + /* Streaming on/off */
> + bool streaming;
> +
> + /* Rewrite common registers on stream on? */
> + bool common_regs_written;
> +
> + /* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
> + unsigned int long_exp_shift;
> +};
> +
> +static inline struct imx519 *to_imx519(struct v4l2_subdev *_sd)
You could call the argument "sd" as well. Up to you.
> +{
> + return container_of(_sd, struct imx519, sd);
> +}
> +
> +/* Read registers up to 2 at a time */
> +static int imx519_read_reg(struct imx519 *imx519, u16 reg, u32 len, u32 *val)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + struct i2c_msg msgs[2];
> + u8 addr_buf[2] = { reg >> 8, reg & 0xff };
> + u8 data_buf[4] = { 0, };
> + int ret;
> +
> + if (len > 4)
> + return -EINVAL;
> +
> + /* Write register address */
> + msgs[0].addr = client->addr;
> + msgs[0].flags = 0;
> + msgs[0].len = ARRAY_SIZE(addr_buf);
> + msgs[0].buf = addr_buf;
> +
> + /* Read data from register */
> + msgs[1].addr = client->addr;
> + msgs[1].flags = I2C_M_RD;
> + msgs[1].len = len;
> + msgs[1].buf = &data_buf[4 - len];
> +
> + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
> + if (ret != ARRAY_SIZE(msgs))
> + return -EIO;
> +
> + *val = get_unaligned_be32(data_buf);
> +
> + return 0;
> +}
> +
> +/* Write registers up to 2 at a time */
> +static int imx519_write_reg(struct imx519 *imx519, u16 reg, u32 len, u32 val)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + u8 buf[6];
> +
> + if (len > 4)
> + return -EINVAL;
> +
> + put_unaligned_be16(reg, buf);
> + put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
> + if (i2c_master_send(client, buf, len + 2) != len + 2)
> + return -EIO;
> +
> + return 0;
> +}
We have V4L2 CCI helpers, please switch. (See
drivers/media/v4l2-core/v4l2-cci.c .)
> +
> +/* Write a list of registers */
> +static int imx519_write_regs(struct imx519 *imx519,
> + const struct imx519_reg *regs, u32 len)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + unsigned int i;
> + int ret;
> +
> + for (i = 0; i < len; i++) {
> + ret = imx519_write_reg(imx519, regs[i].address, 1, regs[i].val);
> + if (ret) {
> + dev_err_ratelimited(&client->dev,
> + "Failed to write reg 0x%4.4x. error = %d\n",
> + regs[i].address, ret);
> +
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +
> +/* Get bayer order based on flip setting. */
> +static u32 imx519_get_format_code(struct imx519 *imx519)
> +{
> + unsigned int i;
> +
> + lockdep_assert_held(&imx519->mutex);
> +
> + i = (imx519->vflip->val ? 2 : 0) |
> + (imx519->hflip->val ? 1 : 0);
> +
> + return codes[i];
> +}
> +
> +static int imx519_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> +{
> + struct imx519 *imx519 = to_imx519(sd);
> + struct v4l2_mbus_framefmt *try_fmt_img =
> + v4l2_subdev_get_try_format(sd, fh->state, IMAGE_PAD);
> + struct v4l2_mbus_framefmt *try_fmt_meta =
> + v4l2_subdev_get_try_format(sd, fh->state, METADATA_PAD);
> + struct v4l2_rect *try_crop;
> +
> + mutex_lock(&imx519->mutex);
> +
> + /* Initialize try_fmt for the image pad */
> + try_fmt_img->width = supported_modes_10bit[0].width;
> + try_fmt_img->height = supported_modes_10bit[0].height;
> + try_fmt_img->code = imx519_get_format_code(imx519);
> + try_fmt_img->field = V4L2_FIELD_NONE;
> +
> + /* Initialize try_fmt for the embedded metadata pad */
> + try_fmt_meta->width = IMX519_EMBEDDED_LINE_WIDTH;
> + try_fmt_meta->height = IMX519_NUM_EMBEDDED_LINES;
> + try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
> + try_fmt_meta->field = V4L2_FIELD_NONE;
> +
> + /* Initialize try_crop */
> + try_crop = v4l2_subdev_get_try_crop(sd, fh->state, IMAGE_PAD);
> + try_crop->left = IMX519_PIXEL_ARRAY_LEFT;
> + try_crop->top = IMX519_PIXEL_ARRAY_TOP;
> + try_crop->width = IMX519_PIXEL_ARRAY_WIDTH;
> + try_crop->height = IMX519_PIXEL_ARRAY_HEIGHT;
> +
> + mutex_unlock(&imx519->mutex);
It'd be nicer to do this in the init_cfg callback.
In general, also switching to subdev state API would be nice. An example,
possibly somewhat unpolished, can be found here:
<URL:https://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git/commit/?h=streams/work&id=d865071782564f1f118d7ad5d4b6813f47d908b5>.
> +
> + return 0;
> +}
> +
> +static void imx519_adjust_exposure_range(struct imx519 *imx519)
> +{
> + int exposure_max, exposure_def;
> +
> + /* Honour the VBLANK limits when setting exposure. */
> + exposure_max = imx519->mode->height + imx519->vblank->val -
> + IMX519_EXPOSURE_OFFSET;
> + exposure_def = min(exposure_max, imx519->exposure->val);
> + __v4l2_ctrl_modify_range(imx519->exposure, imx519->exposure->minimum,
> + exposure_max, imx519->exposure->step,
> + exposure_def);
> +}
> +
> +static int imx519_set_frame_length(struct imx519 *imx519, unsigned int val)
> +{
> + int ret = 0;
> +
> + imx519->long_exp_shift = 0;
> +
> + while (val > IMX519_FRAME_LENGTH_MAX) {
> + imx519->long_exp_shift++;
> + val >>= 1;
> + }
> +
> + ret = imx519_write_reg(imx519, IMX519_REG_FRAME_LENGTH,
> + IMX519_REG_VALUE_16BIT, val);
> + if (ret)
> + return ret;
> +
> + return imx519_write_reg(imx519, IMX519_LONG_EXP_SHIFT_REG,
> + IMX519_REG_VALUE_08BIT, imx519->long_exp_shift);
> +}
> +
> +static int imx519_set_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct imx519 *imx519 =
> + container_of(ctrl->handler, struct imx519, ctrl_handler);
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + int ret = 0;
> +
> + /*
> + * The VBLANK control may change the limits of usable exposure, so check
> + * and adjust if necessary.
> + */
> + if (ctrl->id == V4L2_CID_VBLANK)
> + imx519_adjust_exposure_range(imx519);
> +
> + /*
> + * Applying V4L2 control value only happens
> + * when power is up for streaming
> + */
> + if (pm_runtime_get_if_in_use(&client->dev) == 0)
> + return 0;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_ANALOGUE_GAIN:
> + ret = imx519_write_reg(imx519, IMX519_REG_ANALOG_GAIN,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_EXPOSURE:
> + ret = imx519_write_reg(imx519, IMX519_REG_EXPOSURE,
> + IMX519_REG_VALUE_16BIT, ctrl->val >>
> + imx519->long_exp_shift);
> + break;
> + case V4L2_CID_DIGITAL_GAIN:
> + ret = imx519_write_reg(imx519, IMX519_REG_DIGITAL_GAIN,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN:
> + ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN,
> + IMX519_REG_VALUE_16BIT,
> + imx519_test_pattern_val[ctrl->val]);
> + break;
> + case V4L2_CID_TEST_PATTERN_RED:
> + ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_R,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN_GREENR:
> + ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_GR,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN_BLUE:
> + ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_B,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN_GREENB:
> + ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_GB,
> + IMX519_REG_VALUE_16BIT, ctrl->val);
> + break;
> + case V4L2_CID_HFLIP:
> + case V4L2_CID_VFLIP:
> + ret = imx519_write_reg(imx519, IMX519_REG_ORIENTATION, 1,
> + imx519->hflip->val |
> + imx519->vflip->val << 1);
> + break;
> + case V4L2_CID_VBLANK:
> + ret = imx519_set_frame_length(imx519,
> + imx519->mode->height + ctrl->val);
> + break;
> + default:
> + dev_info(&client->dev,
> + "ctrl(id:0x%x,val:0x%x) is not handled\n",
> + ctrl->id, ctrl->val);
> + ret = -EINVAL;
> + break;
> + }
> +
> + pm_runtime_put(&client->dev);
> +
> + return ret;
> +}
> +
> +static const struct v4l2_ctrl_ops imx519_ctrl_ops = {
> + .s_ctrl = imx519_set_ctrl,
> +};
> +
> +static int imx519_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + if (code->pad >= NUM_PADS)
> + return -EINVAL;
The caller will have checked for this already, same for other callbacks.
> +
> + if (code->pad == IMAGE_PAD) {
> + if (code->index > 0)
> + return -EINVAL;
> +
> + code->code = imx519_get_format_code(imx519);
> + } else {
> + if (code->index > 0)
> + return -EINVAL;
> +
> + code->code = MEDIA_BUS_FMT_SENSOR_DATA;
> + }
> +
> + return 0;
> +}
> +
> +static int imx519_enum_frame_size(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + if (fse->pad >= NUM_PADS)
> + return -EINVAL;
> +
> + if (fse->pad == IMAGE_PAD) {
> + if (fse->index >= ARRAY_SIZE(supported_modes_10bit))
> + return -EINVAL;
> +
> + if (fse->code != imx519_get_format_code(imx519))
> + return -EINVAL;
> +
> + fse->min_width = supported_modes_10bit[fse->index].width;
> + fse->max_width = fse->min_width;
> + fse->min_height = supported_modes_10bit[fse->index].height;
> + fse->max_height = fse->min_height;
> + } else {
> + if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
> + return -EINVAL;
> +
> + fse->min_width = IMX519_EMBEDDED_LINE_WIDTH;
> + fse->max_width = fse->min_width;
> + fse->min_height = IMX519_NUM_EMBEDDED_LINES;
> + fse->max_height = fse->min_height;
> + }
> +
> + return 0;
> +}
> +
> +static void imx519_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
> +{
> + fmt->colorspace = V4L2_COLORSPACE_RAW;
> + fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
> + fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
> + fmt->colorspace,
> + fmt->ycbcr_enc);
> + fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
> +}
> +
> +static void imx519_update_image_pad_format(struct imx519 *imx519,
> + const struct imx519_mode *mode,
> + struct v4l2_subdev_format *fmt)
> +{
> + fmt->format.width = mode->width;
> + fmt->format.height = mode->height;
> + fmt->format.field = V4L2_FIELD_NONE;
> + imx519_reset_colorspace(&fmt->format);
> +}
> +
> +static void imx519_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
> +{
> + fmt->format.width = IMX519_EMBEDDED_LINE_WIDTH;
> + fmt->format.height = IMX519_NUM_EMBEDDED_LINES;
> + fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
> + fmt->format.field = V4L2_FIELD_NONE;
> +}
> +
> +static int imx519_get_pad_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *fmt)
> +{
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + if (fmt->pad >= NUM_PADS)
> + return -EINVAL;
> +
> + mutex_lock(&imx519->mutex);
> +
> + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
> + struct v4l2_mbus_framefmt *try_fmt =
> + v4l2_subdev_get_try_format(&imx519->sd, sd_state,
> + fmt->pad);
> + /* update the code which could change due to vflip or hflip: */
> + try_fmt->code = fmt->pad == IMAGE_PAD ?
> + imx519_get_format_code(imx519) :
> + MEDIA_BUS_FMT_SENSOR_DATA;
> + fmt->format = *try_fmt;
> + } else {
> + if (fmt->pad == IMAGE_PAD) {
> + imx519_update_image_pad_format(imx519, imx519->mode,
> + fmt);
> + fmt->format.code =
> + imx519_get_format_code(imx519);
> + } else {
> + imx519_update_metadata_pad_format(fmt);
> + }
> + }
> +
> + mutex_unlock(&imx519->mutex);
> + return 0;
> +}
> +
> +static
> +unsigned int imx519_get_frame_length(const struct imx519_mode *mode,
> + const struct v4l2_fract *timeperframe)
> +{
> + u64 frame_length;
> +
> + frame_length = (u64)timeperframe->numerator * IMX519_PIXEL_RATE;
> + do_div(frame_length,
> + (u64)timeperframe->denominator * mode->line_length_pix);
> +
> + if (WARN_ON(frame_length > IMX519_FRAME_LENGTH_MAX))
> + frame_length = IMX519_FRAME_LENGTH_MAX;
> +
> + return max_t(unsigned int, frame_length, mode->height);
> +}
> +
> +static void imx519_set_framing_limits(struct imx519 *imx519)
> +{
> + unsigned int frm_length_min, frm_length_default, hblank;
> + const struct imx519_mode *mode = imx519->mode;
> +
> + frm_length_min = imx519_get_frame_length(mode, &mode->timeperframe_min);
> + frm_length_default =
> + imx519_get_frame_length(mode, &mode->timeperframe_default);
> +
> + /* Default to no long exposure multiplier. */
> + imx519->long_exp_shift = 0;
> +
> + /* Update limits and set FPS to default */
> + __v4l2_ctrl_modify_range(imx519->vblank, frm_length_min - mode->height,
> + ((1 << IMX519_LONG_EXP_SHIFT_MAX) *
> + IMX519_FRAME_LENGTH_MAX) - mode->height,
> + 1, frm_length_default - mode->height);
> +
> + /* Setting this will adjust the exposure limits as well. */
> + __v4l2_ctrl_s_ctrl(imx519->vblank, frm_length_default - mode->height);
> +
> + /*
> + * Currently PPL is fixed to the mode specified value, so hblank
> + * depends on mode->width only, and is not changeable in any
> + * way other than changing the mode.
> + */
> + hblank = mode->line_length_pix - mode->width;
> + __v4l2_ctrl_modify_range(imx519->hblank, hblank, hblank, 1, hblank);
> +}
> +
> +static int imx519_set_pad_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *fmt)
> +{
> + struct v4l2_mbus_framefmt *framefmt;
> + const struct imx519_mode *mode;
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + if (fmt->pad >= NUM_PADS)
> + return -EINVAL;
> +
> + mutex_lock(&imx519->mutex);
> +
> + if (fmt->pad == IMAGE_PAD) {
> + /* Bayer order varies with flips */
> + fmt->format.code = imx519_get_format_code(imx519);
> +
> + mode = v4l2_find_nearest_size(supported_modes_10bit,
> + ARRAY_SIZE(supported_modes_10bit),
> + width, height,
> + fmt->format.width,
> + fmt->format.height);
> + imx519_update_image_pad_format(imx519, mode, fmt);
> + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
> + framefmt = v4l2_subdev_get_try_format(sd, sd_state,
> + fmt->pad);
> + *framefmt = fmt->format;
> + } else {
> + imx519->mode = mode;
> + imx519->fmt_code = fmt->format.code;
> + imx519_set_framing_limits(imx519);
> + }
> + } else {
> + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
> + framefmt = v4l2_subdev_get_try_format(sd, sd_state,
> + fmt->pad);
> + *framefmt = fmt->format;
> + } else {
> + /* Only one embedded data mode is supported */
> + imx519_update_metadata_pad_format(fmt);
> + }
> + }
> +
> + mutex_unlock(&imx519->mutex);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_rect *
> +__imx519_get_pad_crop(struct imx519 *imx519, struct v4l2_subdev_state *sd_state,
> + unsigned int pad, enum v4l2_subdev_format_whence which)
> +{
> + switch (which) {
> + case V4L2_SUBDEV_FORMAT_TRY:
> + return v4l2_subdev_get_try_crop(&imx519->sd, sd_state, pad);
> + case V4L2_SUBDEV_FORMAT_ACTIVE:
> + return &imx519->mode->crop;
> + }
> +
> + return NULL;
> +}
> +
> +static int imx519_get_selection(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_selection *sel)
> +{
> + switch (sel->target) {
> + case V4L2_SEL_TGT_CROP: {
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + mutex_lock(&imx519->mutex);
> + sel->r = *__imx519_get_pad_crop(imx519, sd_state, sel->pad,
> + sel->which);
> + mutex_unlock(&imx519->mutex);
> +
> + return 0;
> + }
> +
> + case V4L2_SEL_TGT_NATIVE_SIZE:
> + sel->r.left = 0;
> + sel->r.top = 0;
> + sel->r.width = IMX519_NATIVE_WIDTH;
> + sel->r.height = IMX519_NATIVE_HEIGHT;
> +
> + return 0;
> +
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + sel->r.left = IMX519_PIXEL_ARRAY_LEFT;
> + sel->r.top = IMX519_PIXEL_ARRAY_TOP;
> + sel->r.width = IMX519_PIXEL_ARRAY_WIDTH;
> + sel->r.height = IMX519_PIXEL_ARRAY_HEIGHT;
> +
> + return 0;
> + }
> +
> + return -EINVAL;
> +}
> +
> +/* Start streaming */
> +static int imx519_start_streaming(struct imx519 *imx519)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + const struct imx519_reg_list *reg_list;
> + int ret;
> +
> + if (!imx519->common_regs_written) {
> + ret = imx519_write_regs(imx519, mode_common_regs,
> + ARRAY_SIZE(mode_common_regs));
> +
> + if (ret) {
> + dev_err(&client->dev, "%s failed to set common settings\n",
> + __func__);
> + return ret;
> + }
> + imx519->common_regs_written = true;
> + }
> +
> + /* Apply default values of current mode */
> + reg_list = &imx519->mode->reg_list;
> + ret = imx519_write_regs(imx519, reg_list->regs, reg_list->num_of_regs);
> + if (ret) {
> + dev_err(&client->dev, "%s failed to set mode\n", __func__);
> + return ret;
> + }
> +
> + /* Apply customized values from user */
> + ret = __v4l2_ctrl_handler_setup(imx519->sd.ctrl_handler);
> + if (ret)
> + return ret;
> +
> + /* set stream on register */
> + return imx519_write_reg(imx519, IMX519_REG_MODE_SELECT,
> + IMX519_REG_VALUE_08BIT, IMX519_MODE_STREAMING);
> +}
> +
> +/* Stop streaming */
> +static void imx519_stop_streaming(struct imx519 *imx519)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + int ret;
> +
> + /* set stream off register */
> + ret = imx519_write_reg(imx519, IMX519_REG_MODE_SELECT,
> + IMX519_REG_VALUE_08BIT, IMX519_MODE_STANDBY);
> + if (ret)
> + dev_err(&client->dev, "%s failed to set stream\n", __func__);
> +
> + __v4l2_ctrl_grab(imx519->vflip, false);
> + __v4l2_ctrl_grab(imx519->hflip, false);
> +}
> +
> +static int imx519_set_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct imx519 *imx519 = to_imx519(sd);
> + struct i2c_client *client = v4l2_get_subdevdata(sd);
> + int ret = 0;
> +
> + mutex_lock(&imx519->mutex);
> + if (imx519->streaming == enable) {
> + mutex_unlock(&imx519->mutex);
> + return 0;
> + }
> +
> + if (enable) {
> + ret = pm_runtime_get_sync(&client->dev);
> + if (ret < 0) {
> + pm_runtime_put_noidle(&client->dev);
> + goto err_unlock;
> + }
> +
> + /*
> + * Apply default & customized values
> + * and then start streaming.
> + */
> + ret = imx519_start_streaming(imx519);
> + if (ret)
> + goto err_rpm_put;
> + } else {
> + imx519_stop_streaming(imx519);
> + pm_runtime_put(&client->dev);
> + }
> +
> + imx519->streaming = enable;
> +
> + /* vflip and hflip cannot change during streaming */
> + __v4l2_ctrl_grab(imx519->vflip, enable);
> + __v4l2_ctrl_grab(imx519->hflip, enable);
> +
> + mutex_unlock(&imx519->mutex);
> +
> + return ret;
> +
> +err_rpm_put:
> + pm_runtime_put(&client->dev);
> +err_unlock:
> + mutex_unlock(&imx519->mutex);
> +
> + return ret;
> +}
> +
> +/* Power/clock management functions */
> +static int imx519_power_on(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct imx519 *imx519 = to_imx519(sd);
> + int ret;
> +
> + ret = regulator_bulk_enable(IMX519_NUM_SUPPLIES,
> + imx519->supplies);
> + if (ret) {
> + dev_err(&client->dev, "%s: failed to enable regulators\n",
> + __func__);
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(imx519->xclk);
> + if (ret) {
> + dev_err(&client->dev, "%s: failed to enable clock\n",
> + __func__);
> + goto reg_off;
> + }
> +
> + gpiod_set_value_cansleep(imx519->reset_gpio, 1);
> + usleep_range(IMX519_XCLR_MIN_DELAY_US,
> + IMX519_XCLR_MIN_DELAY_US + IMX519_XCLR_DELAY_RANGE_US);
> +
> + return 0;
> +
> +reg_off:
> + regulator_bulk_disable(IMX519_NUM_SUPPLIES, imx519->supplies);
> +
> + return ret;
> +}
> +
> +static int imx519_power_off(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + gpiod_set_value_cansleep(imx519->reset_gpio, 0);
> + regulator_bulk_disable(IMX519_NUM_SUPPLIES, imx519->supplies);
> + clk_disable_unprepare(imx519->xclk);
> +
> + /* Force reprogramming of the common registers when powered up again. */
> + imx519->common_regs_written = false;
> +
> + return 0;
> +}
> +
> +static int __maybe_unused imx519_suspend(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + if (imx519->streaming)
> + imx519_stop_streaming(imx519);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused imx519_resume(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct imx519 *imx519 = to_imx519(sd);
> + int ret;
> +
> + if (imx519->streaming) {
> + ret = imx519_start_streaming(imx519);
> + if (ret)
> + goto error;
> + }
> +
> + return 0;
> +
> +error:
> + imx519_stop_streaming(imx519);
> + imx519->streaming = 0;
> + return ret;
> +}
> +
> +static int imx519_get_regulators(struct imx519 *imx519)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + unsigned int i;
> +
> + for (i = 0; i < IMX519_NUM_SUPPLIES; i++)
> + imx519->supplies[i].supply = imx519_supply_name[i];
> +
> + return devm_regulator_bulk_get(&client->dev,
> + IMX519_NUM_SUPPLIES,
> + imx519->supplies);
> +}
> +
> +/* Verify chip ID */
> +static int imx519_identify_module(struct imx519 *imx519, u32 expected_id)
> +{
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + int ret;
> + u32 val;
> +
> + ret = imx519_read_reg(imx519, IMX519_REG_CHIP_ID,
> + IMX519_REG_VALUE_16BIT, &val);
> + if (ret) {
> + dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
> + expected_id, ret);
> + return ret;
> + }
> +
> + if (val != expected_id) {
> + dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
> + expected_id, val);
> + return -EIO;
> + }
> +
> + dev_info(&client->dev, "Device found is imx%x\n", val);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_core_ops imx519_core_ops = {
> + .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
> +};
> +
> +static const struct v4l2_subdev_video_ops imx519_video_ops = {
> + .s_stream = imx519_set_stream,
> +};
> +
> +static const struct v4l2_subdev_pad_ops imx519_pad_ops = {
> + .enum_mbus_code = imx519_enum_mbus_code,
> + .get_fmt = imx519_get_pad_format,
> + .set_fmt = imx519_set_pad_format,
> + .get_selection = imx519_get_selection,
> + .enum_frame_size = imx519_enum_frame_size,
> +};
> +
> +static const struct v4l2_subdev_ops imx519_subdev_ops = {
> + .core = &imx519_core_ops,
> + .video = &imx519_video_ops,
> + .pad = &imx519_pad_ops,
> +};
> +
> +static const struct v4l2_subdev_internal_ops imx519_internal_ops = {
> + .open = imx519_open,
> +};
> +
> +/* Initialize control handlers */
> +static int imx519_init_controls(struct imx519 *imx519)
> +{
> + struct v4l2_ctrl_handler *ctrl_hdlr;
> + struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
> + struct v4l2_fwnode_device_properties props;
> + unsigned int i;
> + int ret;
> +
> + ctrl_hdlr = &imx519->ctrl_handler;
> + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 16);
> + if (ret)
> + return ret;
> +
> + mutex_init(&imx519->mutex);
> + ctrl_hdlr->lock = &imx519->mutex;
> +
> + /* By default, PIXEL_RATE is read only */
> + imx519->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_PIXEL_RATE,
> + IMX519_PIXEL_RATE,
> + IMX519_PIXEL_RATE, 1,
> + IMX519_PIXEL_RATE);
> +
> + /*
> + * Create the controls here, but mode specific limits are setup
> + * in the imx519_set_framing_limits() call below.
> + */
> + imx519->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_VBLANK, 0, 0xffff, 1, 0);
> + imx519->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_HBLANK, 0, 0xffff, 1, 0);
> +
> + /* HBLANK is read-only for now, but does change with mode. */
> + if (imx519->hblank)
> + imx519->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> + imx519->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_EXPOSURE,
> + IMX519_EXPOSURE_MIN,
> + IMX519_EXPOSURE_MAX,
> + IMX519_EXPOSURE_STEP,
> + IMX519_EXPOSURE_DEFAULT);
> +
> + v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
> + IMX519_ANA_GAIN_MIN, IMX519_ANA_GAIN_MAX,
> + IMX519_ANA_GAIN_STEP, IMX519_ANA_GAIN_DEFAULT);
> +
> + v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
> + IMX519_DGTL_GAIN_MIN, IMX519_DGTL_GAIN_MAX,
> + IMX519_DGTL_GAIN_STEP, IMX519_DGTL_GAIN_DEFAULT);
> +
> + imx519->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + if (imx519->hflip)
> + imx519->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
> +
> + imx519->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> + if (imx519->vflip)
> + imx519->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
> +
> + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(imx519_test_pattern_menu) - 1,
> + 0, 0, imx519_test_pattern_menu);
> + for (i = 0; i < 4; i++) {
> + /*
> + * The assumption is that
> + * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
> + * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2
> + * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
> + */
> + v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
> + V4L2_CID_TEST_PATTERN_RED + i,
> + IMX519_TEST_PATTERN_COLOUR_MIN,
> + IMX519_TEST_PATTERN_COLOUR_MAX,
> + IMX519_TEST_PATTERN_COLOUR_STEP,
> + IMX519_TEST_PATTERN_COLOUR_MAX);
> + /* The "Solid color" pattern is white by default */
> + }
> +
> + if (ctrl_hdlr->error) {
> + ret = ctrl_hdlr->error;
> + dev_err(&client->dev, "%s control init failed (%d)\n",
> + __func__, ret);
> + goto error;
> + }
> +
> + ret = v4l2_fwnode_device_parse(&client->dev, &props);
> + if (ret)
> + goto error;
> +
> + ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx519_ctrl_ops,
> + &props);
> + if (ret)
> + goto error;
> +
> + imx519->sd.ctrl_handler = ctrl_hdlr;
> +
> + /* Setup exposure and frame/line length limits. */
> + imx519_set_framing_limits(imx519);
> +
> + return 0;
> +
> +error:
> + v4l2_ctrl_handler_free(ctrl_hdlr);
> + mutex_destroy(&imx519->mutex);
> +
> + return ret;
> +}
> +
> +static void imx519_free_controls(struct imx519 *imx519)
> +{
> + v4l2_ctrl_handler_free(imx519->sd.ctrl_handler);
> + mutex_destroy(&imx519->mutex);
> +}
> +
> +static int imx519_check_hwcfg(struct device *dev)
> +{
> + struct fwnode_handle *endpoint;
> + struct v4l2_fwnode_endpoint ep_cfg = {
> + .bus_type = V4L2_MBUS_CSI2_DPHY
> + };
> + int ret = -EINVAL;
> +
> + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
> + if (!endpoint) {
> + dev_err(dev, "endpoint node not found\n");
> + return -EINVAL;
> + }
> +
> + if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
> + dev_err(dev, "could not parse endpoint\n");
> + goto error_out;
> + }
> +
> + /* Check the number of MIPI CSI2 data lanes */
> + if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
> + dev_err(dev, "only 2 data lanes are currently supported\n");
> + goto error_out;
> + }
> +
> + /* Check the link frequency set in device tree */
> + if (!ep_cfg.nr_of_link_frequencies) {
> + dev_err(dev, "link-frequency property not found in DT\n");
> + goto error_out;
> + }
> +
> + if (ep_cfg.nr_of_link_frequencies != 1 ||
> + ep_cfg.link_frequencies[0] != IMX519_DEFAULT_LINK_FREQ) {
> + dev_err(dev, "Link frequency not supported: %lld\n",
> + ep_cfg.link_frequencies[0]);
> + goto error_out;
> + }
> +
> + ret = 0;
> +
> +error_out:
> + v4l2_fwnode_endpoint_free(&ep_cfg);
> + fwnode_handle_put(endpoint);
> +
> + return ret;
> +}
> +
> +static const struct of_device_id imx519_dt_ids[] = {
> + { .compatible = "sony,imx519"},
> + { /* sentinel */ }
> +};
> +
> +static int imx519_probe(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct imx519 *imx519;
> + const struct of_device_id *match;
> + u32 xclk_freq;
> + int ret;
> +
> + imx519 = devm_kzalloc(&client->dev, sizeof(*imx519), GFP_KERNEL);
> + if (!imx519)
> + return -ENOMEM;
> +
> + v4l2_i2c_subdev_init(&imx519->sd, client, &imx519_subdev_ops);
> +
> + match = of_match_device(imx519_dt_ids, dev);
> + if (!match)
> + return -ENODEV;
You only handle a single device, do you need this?
> +
> + /* Check the hardware configuration in device tree */
> + if (imx519_check_hwcfg(dev))
> + return -EINVAL;
> +
> + /* Get system clock (xclk) */
> + imx519->xclk = devm_clk_get(dev, NULL);
> + if (IS_ERR(imx519->xclk)) {
> + dev_err(dev, "failed to get xclk\n");
> + return PTR_ERR(imx519->xclk);
> + }
> +
> + xclk_freq = clk_get_rate(imx519->xclk);
> + if (xclk_freq != IMX519_XCLK_FREQ) {
> + dev_err(dev, "xclk frequency not supported: %d Hz\n",
> + xclk_freq);
> + return -EINVAL;
> + }
> +
> + ret = imx519_get_regulators(imx519);
> + if (ret) {
> + dev_err(dev, "failed to get regulators\n");
> + return ret;
> + }
> +
> + /* Request optional enable pin */
> + imx519->reset_gpio = devm_gpiod_get_optional(dev, "reset",
> + GPIOD_OUT_HIGH);
> +
> + /*
> + * The sensor must be powered for imx519_identify_module()
> + * to be able to read the CHIP_ID register
> + */
> + ret = imx519_power_on(dev);
> + if (ret)
> + return ret;
> +
> + ret = imx519_identify_module(imx519, IMX519_CHIP_ID);
> + if (ret)
> + goto error_power_off;
> +
> + /* Set default mode to max resolution */
> + imx519->mode = &supported_modes_10bit[0];
> + imx519->fmt_code = MEDIA_BUS_FMT_SRGGB10_1X10;
> +
> + /* Enable runtime PM and turn off the device */
> + pm_runtime_set_active(dev);
> + pm_runtime_enable(dev);
> + pm_runtime_idle(dev);
> +
> + /* This needs the pm runtime to be registered. */
> + ret = imx519_init_controls(imx519);
> + if (ret)
> + goto error_power_off;
> +
> + /* Initialize subdev */
> + imx519->sd.internal_ops = &imx519_internal_ops;
> + imx519->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
> + V4L2_SUBDEV_FL_HAS_EVENTS;
> + imx519->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> +
> + /* Initialize source pads */
> + imx519->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
> + imx519->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
> +
> + ret = media_entity_pads_init(&imx519->sd.entity, NUM_PADS, imx519->pad);
> + if (ret) {
> + dev_err(dev, "failed to init entity pads: %d\n", ret);
> + goto error_handler_free;
> + }
> +
> + ret = v4l2_async_register_subdev_sensor(&imx519->sd);
> + if (ret < 0) {
> + dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
> + goto error_media_entity;
> + }
> +
> + return 0;
> +
> +error_media_entity:
> + media_entity_cleanup(&imx519->sd.entity);
> +
> +error_handler_free:
> + imx519_free_controls(imx519);
> +
> +error_power_off:
> + pm_runtime_disable(&client->dev);
> + pm_runtime_set_suspended(&client->dev);
> + imx519_power_off(&client->dev);
> +
> + return ret;
> +}
> +
> +static void imx519_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct imx519 *imx519 = to_imx519(sd);
> +
> + v4l2_async_unregister_subdev(sd);
> + media_entity_cleanup(&sd->entity);
> + imx519_free_controls(imx519);
> +
> + pm_runtime_disable(&client->dev);
> + if (!pm_runtime_status_suspended(&client->dev))
> + imx519_power_off(&client->dev);
> + pm_runtime_set_suspended(&client->dev);
> +}
> +
> +MODULE_DEVICE_TABLE(of, imx519_dt_ids);
> +
> +static const struct dev_pm_ops imx519_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(imx519_suspend, imx519_resume)
> + SET_RUNTIME_PM_OPS(imx519_power_off, imx519_power_on, NULL)
> +};
> +
> +static struct i2c_driver imx519_i2c_driver = {
> + .driver = {
> + .name = "imx519",
> + .of_match_table = imx519_dt_ids,
> + .pm = &imx519_pm_ops,
> + },
> + .probe_new = imx519_probe,
> + .remove = imx519_remove,
> +};
> +
> +module_i2c_driver(imx519_i2c_driver);
> +
> +MODULE_AUTHOR("Lee Jackson <lee.jackson@...ucam.com>");
> +MODULE_DESCRIPTION("Sony IMX519 sensor driver");
> +MODULE_LICENSE("GPL v2");
>
--
Kind regards,
Sakari Ailus
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